Hot-water heater.



No. 665,200. Patented Jan. 1, 1901 J. E. EVANS & w. CURTIS. I

(Applicatibn filed Apr. 14, 1900.]

(No Model.)

UNITE 4TATES ATENT FFICE,

HOT-WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 665,200, dated January 1, 1901 I Application filed April 14:, 1900. Serial No- 12 ,869. (No model.)

To all whom it may concern.-

Beit known that we, JAMES E. EVANS and WILLIAM CURTIS, citizens of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Hot-Water Heaters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in hot-water heaters; and it consists in a heater provided with a tapered drum and Water-legs con nected therewith by piping, said piping extending diagonally across the heater and entering the tapering sides of the-drum, whereby a great deal of heating-surface can be exposed to the fire and only a small number of elbows are required in the piping.

It also consists in certain other novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and specifically claimed.

In the accompanying drawings, Figure 1 represents an end elevation of a hot-water heater constructed in accordance with our invention. Fig. 2 represents a side elevation of the same.

Our invention is designed to supply heaters which will be provided with a large number of circulating-pipes which are arranged in a manner convenient for receiving the heat from a fire and yet will be sufficiently upright to produce a quick circulation of the heated water. It is also arranged so that the piping may connect the water-legs with a drum without having to employ a large number of elbows.

The heater comprises a drum, as 1, connected, by means of aseries of heating-pipes2 and 3, with water-legs 4 and 5. The water-legs and the drum are preferably made of castiron or other material and cored out to receive the ends of pipes and cleaning-plugs. The drum 1 is preferably made of an approximately triangular shape in cross-section, as seen in Fig.1, the object being to form a downwardlytapering receptacle, so that the pipes 2 and 3, connecting the drum with the waterlegs, may be led to the said drum without using many elbows. By placing the drum with its tapering portion extending downwardly it presents two downwardly-inclined faces, as 6 and 7, to receive the pipes 2 and 3.

The water-legs 4 and 5 are also preferably provided with upwardly-facing inclined surfaces 8 and 9 to receive the lower ends of the pipes. The pipes from the water-leg a extend upwardly in a diagonal direction to points opposite the face 7 of the drum 1. They are then provided with elbows, as at 10, which are connected, by means of short pipes, with the drum, the said short pipes extending approximately at rightangles to the lower pipes.

In the same manner the pipes 2 2 extend up wardly in a diagonal direction from the face 9 of the water-leg 5 and are connected, by means of elbows 11-and short pipes, with the face 6 of the drum 1. approximately at right angles to each other "and, as seen in Fig. 2 of the drawings, are interwoven, one set of pipes passing between the pipes of the other. As seen in said Fig. 2

also, as large a number of pipes are used as possible, the pipes being placed quite close to each other. By using a large number of pipes agreat deal of heating-surface is procured and the circulation of the water is greatly accelerated. The drum 1 is provided with a number of outlet-pipes, as 12 12, which deliver the hot water for use. The returnpipes from the heating system are preferably led into one of the water-legssay the water-leg 5, as seen in the drawings. shown a plurality of return-pipes, as 13, entering the outer surface of the said Water-leg 5. The drum 1 is also provided with a plug, as 14:,which may be removed for cleaning out the interior of the saiddrum, each of the wao ter-legs 4 and 5 being also provided with plugs, as 15 and 16, by the removal of which the wator-legs may also be cleaned out.

We contemplate the modification of the form of the drum and water-legs by varying the taper of their sides, the relative arrange ment and shapes always being such that each face of the drum in which the pipes are ontered shall always be substantially at right angles to the face of the opposite water-leg,

which receives the lower ends of the same pipes.

It will be observed that the faces of the drum and of the water-legs which receive the The pipes 2 cross the pipes 3 70 We have 85 pipes are flat, which is the best shape in which i to secure the pipes, giving more stability and requiring less labor, and, further, that the pipes enter the faces at right angles, which is the best angle and gives a more stable joint. It will be further observed that thepipes are in straight lengths, which is the approved form, being purchasable ready for use in open market, curved pipes being also objectionable for many reasons. By means of the relative constructions and positions of the pipe-receiving faces we are enabled to use these straight lengths of pipes with a single elbow in each, which is a great advantage in econ omy of structure and ease of repair and replacement.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

A hot-water heater comprising a water-leg on each side and a central upper drum, said drum having its opposite lower faces flat and the water-legs having their inner upper faces flat, and lying in planes substantially at right angles to the planesof the opposite flat lower face of the drum, in combination with two series of pipes, each series having their lower ends secured in the flat inner upper face of a water-leg, and at right angles thereto, and their upper ends in the opposite flat lower face of the drum, and at right angles thereto, each pipe consisting of two straight sections and lower sections of the pipes of the two series passing alternately between the pipes of the other series, the series thus crossing each other at substantially a right angle to each other, joined by a single elbow, substantially as described.

In testimony whereof we hereunto affix our signatures in presence of two witnesses.

JAMES E. EVANS. WILLIAM CURTIS.

Vitnesses:

JAMES T. WATSON, J. H. WHITELY. 

